Airport help!!

I'm posting anon bc this is embarrassing..

So tomorrow morning, I'm flying from California to another state. I've flown ONCE when I was 16 and my mom pretty much did everything (checked my bag, got my ticket/boarding pass, etc.) And I'm super nervous about the airport.

I don't know how to do anything and I'm kind of freaking out. Like I am making myself sick about this.

The actual flying part is not the issue. It's the airport/security that scares me. I don't want to miss my flight but I don't know how to do it at all, let alone quickly.

Does anyone have any advice? I'm not checking a bag, only a carryon. I'm so nervous! I've been having a panic attack for the last hour!